Shilgengar, Sire of Famine, Wingrattle Scarecrow, and Serra Redeemer

Prerequisites

• Shilgengar, Sire of Famine on the battlefield
• Wingrattle Scarecrow on the battlefield
• Serra Redeemer on the battlefield

Steps

1. Activate Shilgengar by sacrificing Wingrattle Scarecrow When Wingrattle Scarecrow dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
2. When Wingrattle Scarecrow enters, Serra Redeemer triggers, putting a +1/+1 counter on Wingrattle Scarecrow Resolve the Shilgengar ability
3. Repeat

Results

• Infinite Blood tokens
• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite artifact tokens
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers